A spokeswoman for the Harlandale Independent School District says an employee who was cleaning up the mess slipped and fell. A statement says the worker, whose name wasn't released, was hospitalized in serious condition.

Principal Aracelie Bunsen sent a letter to parents saying 10 students "made a bad choice in the cafeteria." She says the students in the food fight caused a mess and a significant disturbance.

Bunsen says the students, who are juveniles and their names not released, are expected to face criminal charges and be held accountable by the student code.